Reply to "Waterless engine coolant"

I have a GM V6 in my MGB. I initially ran Evans coolant. It actually has less cooling capacity then water. If you have adequate cooling capacity you will not notice a change because the temp is controlled by the thermostat; not the coolant.

However with a new tight engine it was not enough cooling capacity and I had to go back to water/antifreeze to gain enough cooling capacity.

Other draw backs were limited alternatives when you are on the road. You cannot just add water. If you do any work where you need to drain the coolant, you need to recover it because it is very expensive which also means less likelihood you are going to flush with new or fresh coolant.

My brother runs it in his Cobra which is a high performance big block. The advantage that he like is it is a zero pressure system which has helped with some cooling system issues.

The claim to fame for Evans is it helps with hot spots. In extreme engines, you can get a hot spot. While the coolant temp may be within range a spot in the head can grow hot enough to boil water and keep a vapor barrier. As the vapor barrier grows, the hot spot gets hotter and grows creating a real problem spot even though the coolant is within range. With Evans, it does not boil in this range and can eliminate the hot spot because you never get a vapor spot.

Gary